Disclaimer: Not affiliated with or endorsed by Toyota Motor Company. For informational purposes only. Full Disclaimer

Problems with 2006 Toyota 4Runner POWER TRAIN

On average, the 2006 Toyota 4Runner starts to “feel” problems with the POWER TRAIN and its various aspects after 79 322 miles.

Components Affected by POWER TRAIN Issues

We have classified the 15 complaints from 2006 Toyota 4Runner about POWER TRAIN into the following categories.

DRIVELINE 9 AUTOMATIC TRANSMISSION 3

Recently reported POWER TRAIN problems on 2006 Toyota 4Runner

Tl* the contact owns a 2006 toyota 4runner. the contact stated that oil was discovered in the driveway where the vehicle was parked. the vehicle was taken to tarbox toyota (3671 quaker ln, north kingstown, ri 02852, (401) 884-5438) where the contact was informed that the rear differential was leaking and the frame was rotted. the contact also mentioned that the vehicle could not be repaired due to the excessive rust on the frame. the vehicle was not repaired. the manufacturer was not made aware of the failure. the failure mileage was 168,595.

I just purchased my 2006 4runner and decided to take it to the shop where i work to have them do an oil change and fluid check, the mechanics brought me back and told me that my frame is rusting from the inside out and they think that in a matter of 2 yrs tops the frame will be rotted and collapse . i was terrified and in a panic my husband had taken my 4runner it to his friends garage and had the whole underneath undercoated. i called a toyota dealer and asked if there was anything that toyota can do and he told me that a lot of 4runner owners have been calling about their rotted frames and he told me that it's omly a matter of time when the 4runners will be recalled because they share the same frame as the tacoma's i am so sick with fear and i just can't understand why they would delay this recall when it is a risk of human lives i drive my kids in this 4runner and every time i go over a bump i am scared please help us make toyota do the right thing before people lose ...

Rusty frame, rusted brake, transmission lines

After only a couple of years started rusting pretty badly on frame, crossmembers and front and rear differentials. also stabilizers skid plates and basically anything under the truck. thought it was only surface rust until parts were cracking and stabilizers fell off truck. rear end was ready to drop off truck! truck only has 81,000 miles and looks brand new. wanted to keep another 10 years! my wife and kid used this and could have crashed them both! frame rusted from inside out and dealer deemed undriveable this week! truck valued at $13-15,000! dealer wont warranty and not under tacoma and sequoia recalls! same frame issues toyota! recall the 4 runner toyota! major danger of frame looking ok from outside but crumbling and falling apart while driving. have been a mechanic and body person all my life and never seen rusting and crumbling of a frame in chunks falling off! wake up toyota, recall the 4runner or fix my frame! cannot drive truck!

I have a 2006 toyota 4 runner that has been developing excessive rust flaking on the rear axle housing,brake components, frame and rear suspension componets.we have had warranty work performed approx. 1 year ago and the mechanics at toyota stated they needed to replace or repair various transmission lines before they would return the vehicle to my wife. i asked them what am i suppose to do about all the rust problems and they really didnt have a answer and said i need to talk to the service manager that was not there at the time. i have made every attempt to radicate this issue that has been getting worse over time. vehicle is garage kept and was purchased new as we are the only owner of this vehicle. myself and everyone else know toyota knows about this problem and refused to do anything about it. my fear is that we are on a trip and have catastrophic failure of one or more components and getting in a accident. there was no accident yet.

Takata inflators,abs. purchased vehicle used 08/12/2016 the following mil codes were cleared by selling dealership. c1223, p0456, b1150, cr123, c1241, b1152. needed repair immediately, passed state inspection even needing the following repairs, both front axles, serp belt, sway bar link and rear brakes.08/24/2016 vehicle repaired by selling dealer and returned with flat tire, i had it towed to tire garage because spare was too old and incorrect size. after i picked up from tire repair i made an appointment for an unrepaired safety recall from 2012 on the abs at a local dealership. prior to service appointment i was driving over a speed bump and the vehicle would not drive over bump, abs lights came on and vehicle rolled backwards. had towed to toyota dealer for service(i have receipt for tow) a couple days later dealer said recall was completed but would not provide any documentation for repairs. that dealership broke a lug stud on the front tire in but did not repair it. they said its ok to drive on 5 lugs its a 6 lug rim. i then brought the vehicle to another toyota ...

Excessive vehicle vibration. from review of www.tacomaworld.com forums this is a fairly common occurence with 2nd generation tacomas (2005 to 2015). it seems to stem from the split driveshaft models (prerunners and 4x4s). in some cases it has resulted in vehicles dropping the driveshafts. in my truck, in one day it went to fine to what felt like the worst wheel imbalance i had ever felt. i immediately had my wheels balance and there was no improvement. that's when i went to the forums. also, http://www.tacomahq.com/3392/toyota-tacoma-driveline-vibration-tsb-2005-2014/

The secondary air induction pump (aip) and switching valves failed on my 2006 4runner limited with v8. this is the same issue that is seen on toyota sequoias and tundras. toyota has issued a special extended warranty for this system on those vehicles, but not on the 4 runners, even though the defective systems / parts are the same. toyota customer case # 1409160408. this is a > $2000 repair to basically clear the check engine code and allow me to pass state inspection. i believe there should be a recall on this system or at least have toyota cover all vehicles with this defective system, not just certain higher-volume model years. *tr

I was driving my wife 2006 toyota 4runner sr5 approximately 55-60 miles per hours on 88 west in california and the suv experience sudden acceleration pass 70 miles per hours. i then step on the brakes as hard as i could but the suv continues to accelerate faster than 70 miles per hour. while my foot is on the brake pedal at all time but the suv could not slow down. the suv then struck the rear of a pick up truck in front. after the impact, my suv continued approximately a half mile and then i was able to slow down and bring to a stop in the right lane. toyota down load the data on the suv black box on 3/18/2014 and sent a letter to me and my wife this week stating that the gas pedal is normal. *tr

During snowstorm in 4 wheel drive mode; 4 wheel drive system would not engage due to failure of add - auto disconnecting differential actuator. this led to extremely dangerous safety hazard with vehicle sliding across overhead bridge. no warning of failure, just blinking 4 wheel drive indicator on dashboard. toyota should be ordered to replace this part for free on all 4 wheel drive 4runners. this part has also been out-of-stock in the usa due to extremely high failure rate. note: failure occurs when vehicle is in driving mode in winter weather which represents a major safety hazard to toyota 4runner drivers and occupants. *tr

After stopping the rear end will 'clunk' when either letting off the brakes, or upon accelerating. this will occur roughly 1/10th of the time regardless or variation in braking pressure or acceleration. i've tried every combination of gentle to hard stops and stops with little change in the frequency of the issue. this only started to occur after 53k miles. the dealer told me the 4runner needed more lube, their fix hasn't stopped the problem. my concern is the drive-shaft is binding, and at some point could fail. *tr

I was backing out of a parking space, in reverse, when the engine began to rev. i hit the brakes and shifted into neutral. it revved at about 4000 rpm for a few seconds, then slowed down to a speed faster than normal idle. i put it back into reverse with brake firmly applied, at which point it returned to normal performance. *tr

2006 4 runner sport edition, v8 with 30,000 miles has clunking sound when stopping or accelerating from stop. also, wanders from side to side at normal highway speeds. *tr

Own a 2006 toyota 4runner. noticed belts hanging under car one morning. opened hood and there was oil everywhere, the belts were soaked and had deteriorated. towed to dealership. told it was a known oil leak defect near crankshaft. had the entire drive train rebuilt as oil had damaged everything. covered under warranty. car also lunges forward while stopped at stop lights, stop signs, etc. dealership couldn't re-create so not an issue for them. *tr

Vehicle parked in driveway (running) with transmission in park and the emergency brake fully engaged. vehicle rolled out of driveway, across street, over curb, and down a steep ravine hitting a tree. broached local dealer concerning any safety issues or vehicle problems and they indicated none had been reported to them or your website and questioned circumstances as reported. customer paid for all damages and repairs. *tr

Comments